Anthropic says AI cut a Claude port to AMD GPUs to three days
Original title: Anthropic says AI is eroding Nvidia's CUDA lead, cutting an AMD chip switch from months to three days
Anthropic claims Mythos wrote nearly all AMD kernels and that it already runs Claude on four chip families.
Anthropic told investors it trains and runs Claude on AWS Trainium, Google TPUs, Nvidia GPUs, and AMD GPUs, treating that capacity as one pool. It says its frontier model Mythos ported Claude to AMD GPUs in three days with almost no human intervention, versus months of engineering, and wrote nearly all of the kernels. The company also described compute multipliers, an Anthropic Direct chip-leasing program, and large Nvidia and AMD investment ties. The figures have not been independently verified.
Unconfirmed: Port times and performance claims come only from Anthropic’s investor presentation and are unverified.
- The AMD figures refer to prompt processing on MI355X GPUs.
- Anthropic plans up to two gigawatts of AMD Instinct MI455X, with the first gigawatt in the first half of 2027.
- Nvidia committed up to $10 billion in a November 2025 Microsoft-related deal and is in a $26 billion placement.
- AMD announced an investment of up to $5 billion in July 2026.
From the original article
3 min read at the-decoder.com
Anthropic claims it used AI itself to breach Nvidia's CUDA moat. The company's in-house model Mythos reportedly ported Claude to AMD GPUs in just three days, with almost no human intervention. Anthropic now runs Claude on four chip families and aims to cut costs and reduce vendor dependencies.
By Matthias Bastian · the-decoder.com
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